INTRODUCTION. NFPA 704 Hazard Identification System INTRODUCTION INTRODUCTION. Health Flammability Instability INTRODUCTION INTRODUCTION

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1 NFPA 70 Hazard Identification System Introduction to Section 70 Hazard Identification System of the National Fire Protection Association. NFPA 70 Standard System for the Identification of the Hazards of Materials for Emergency Response Health Flammability Instability Severe Hazard 0 Minimal Hazard 5 6

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3 "The ability of a material to cause injury to a person through contact or entry to the body via inhalation, ingestion, skin contact or eye contact" Heat from a fire. Force from an explosion. Health hazards resulting from long term exposure, either chronic or repeated to low concentrations of hazardous materials. be lethal. cause serious or permanent injury. 5 6 cause temporary incapacitation or residual injury. cause significant irritation. 7 8

4 0 emergency conditions, would offer no hazard beyond that of ordinary combustible materials. The ability of a material to burn under one set of conditions, but not under others. The form or condition of the material. The inherent properties of the material. 9 0 Materials that will rapidly or completely vaporize at atmospheric pressure and normal ambient temperature or that are readily dispersed in air and will burn readily. Liquids and solids that can be ignited under almost all ambient temperature conditions. Materials in this degree produce hazardous atmospheres with air under almost all ambient temperatures or, though unaffected by ambient temperatures, are readily ignited under most all conditions. Materials that must be moderately heated or exposed to relatively high ambient temperatures before ignition can occur. Materials in this degree would not under normal conditions form hazardous atmospheres with air, but under high ambient temperatures or under moderate heating could release vapor in sufficient quantities to produce hazardous atmospheres with air. Materials that must be preheated before ignition can occur. Materials in this degree require considerable preheating, under all ambient temperature conditions, before ignition and combustion can occur.

5 0 Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone and sand. "degree of intrinsic susceptibility of materials to release energy" 5 6 capable of rapidly releasing energy by themselves either through self reaction or polymerization" Whether an area should be evacuated. If a protected location should be used while fighting a fire. Whether caution should be used when approaching a spill or fire. If the application of extinguishing agents is appropriate. 7 Or whether a fire can be fought using normal procedures 8 are readily capable of detonation or explosive decomposition or explosive reaction at normal temperatures pr pressures. are capable of detonation or explosive decomposition or explosive reaction, but that require a strong initiating source or that must be heated under confinement before initiation

6 Materials that readily undergo violent chemical change at elevated temperatures and pressures. are normally stable, but that can become unstable at elevated temperatures and pressures. SPECIAL HAZARDS 0 are normally stable, even under fire conditions. cause special problems or require special firefighting techniques." SPECIAL HAZARDS SPECIAL HAZARDS W Reacts with water OX Oxydizing properties 5 6 6

7 REFERENCES 7 7